Pulsator for milking-machines.



D. BROWN. v PULSATOR FOR MILKING MACHINES. APPLICATION FILED JAN. 25, 1909.

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' Patented Aug. 10, 1909.

DAVID BROWN, QF SPOKANE, WASHINGTON.

PULSATOR FOR MILKING-MAGHINES.

Specification of Letters Patent.

Patented Aug. 10, 1909. 2

Application filed January 25, 1909. Serial No. 474,064.

f allv whom it may concern:

Be it known that I, DAVID Brown, a citi- .zen of the United States, residing at Spo-' kane, in the county of Spokane and State of l'l 'ashmgton, have invented a new and useful lulsator for ltIilking-ltiachines, of which.

the following is a specification.

This invention relates to milking machines and more particularly to a mechanically operated pulsator for use in connection with said machines.

The object of the invention is to provide a milking machine having a pnlsator mounted for oscillationin a casing or housing and 2 actuated by an engine or other motive powerfor applyingsuction intermittently to the or sterilized when necessar teat cups.

A further object is to provide an oscillating pulsator capable of being quickly. de-' tached from the engine so asto permit the pulsator to be readily removed and'cleaned pear in the following description, it being understood that various changes 1n form,

proportions and minor details of construction may be resorted to within the scope of the appended claims.

- Iii the accompanying drawings forming a part of this, specification :F1gure 1 is a perspective view of a milking machine constructed in accordance with my invention showing the same in position on a milk-receiving vessel or pail. Fig. 2 isa. vertical sectional view partly in elevation showing the pulsator in position to establish communication between the teat cups and'the interior of the pail. Fig. 3 is a similar-view showing the pulsator in reversed position. Fi 4; is a side elevation of the pulsator detac ed.

Similar numerals of reference indicate corresponding parts in all of the figures of the drawings.

The milking machine forming the subject matter ofthe present invention includes a cap-piece or support 5 preferably circular in shape, as shown, and provided with an annular groove 6 for the reception of a yicldable packing 8, the latter being adapted to rest on the upper edge of the milk-receiving vessel, indicated 21139. The cap-piece durability and i or support 5 is provided with a depression or pocket 10 adapted to receive the cylinder of an engine or other source of motive power 11 but from which pocket the engine is readily removable.

Secured to or formed integral with the ca p or support a vertically disposed easing or housing 12 in which is mounted for oscillation a pulsator l3. The side walls of the casing 12 at the lower end thereof are pro vided with one or more ports 14. to which are connected short pipe sections 15 having their ends reduced to form nozzles 16 foiengagement with flexible hose sections 17, the latter being provided with teat cups 18 of any approved construction.

Extending through an opening in the cap or support 5 is a pipe 19, one end of which is operatively connected with apump 20, while the opposi to end thereof extends within the pail or vessel 9 so that when the pump is operated suction will be created in the pail and the milk drawn through the pipes 15 and ports 14 into said pail.

The pulsator 13: ispreferably cylindrical in shape, as shown, and is provided with a spirally disposed groove'2l extending ap proximately half way around the circun'ifcrnce of the pulsa-tor and which receives the reduced end 22 of a pin 23. One end of the pin 23 is rigidly secured to and movable with the piston of the engine 11, while the opposite end thereof travels in a vertically disposed slot 24 formed in the adjacent wall of the casing 12. Thus it will be seen that as the piston 25 reciprocates within the cylinder 11, the reduced terminal 22 of the pin 23 will travel in the spiral groove 21 and oscillate the pulsator in a horizontal plane. The upper end of the pulsator is provided with an enlarged head 26 which bears against the adjacent end of the casing 12 and forms in client a bearing for the pulsator. The lower end of the pulsatorv is provided with a dependin extension 27 defining a port 28 adapte to register with the port or ports 14when the valve is in one position to perniit the flowof milk from the teats into the vessel 19, the extension 27 being adapted to register with and close the port or ports 14 at each oscillation of the pulsator so as to intermittently interrupt the suction and thus produce the desiredfpulsations necessary to eifect the milking operation; One

wall of the pulsator 13 is fornied with an air port 29 adapted to register'with a cor piston-of the engine or motor 11 reciprocates the pulsator 13, being held down by air pressure because of the partial vacuum inthe milk receiving vessel will be oscillated within the casing 1.2 so as to cause the extension 27 to alternately open and close the. port or ports 14, in the manner before stated.

. When it is desired to clean or sterilize the pulsator it ismerely necessary to exert an upward pull on the head 26 when the pulsator may be readily withdrawn trom'the casing, the engine 11 being at the same time or previously lifted out of the pocket 10. A suitable bail or handle 32 is rigidly secured to the cap or support 5 to facilitate transporting the mechanism from place to lace. V

While I have shown the motor and sator mounted on the cap or support .it is obvious that said parts may be supported at a point remote from the milk containing vessel without departing from the s irit of the invention. It will also be an erstood that any form ofmotor may be employed for att-uating the pulsator, the type shown in t e present instance being portable.

Having thus described the invention what is claimed is 1., In a milking machine, the combination with suction mechanism, oii an oscillating pulsator for'intermittently interrupting the suction, and a reciprocating motor operatively connected with the pulsator for actuating the latter, the axis of oscillation of the pulsator being parallel to the path of reciprocationof the motor. I

2. In a milking machine, the combination with suction mechanism, an. oscillating pulsator for intermittently interrupting the suction and having a spiral groove formed therein, a motor, and means carried by the motor and extended within the groove of the pulsator for actuating the latter.

3. In a milking machine, the combination with suction mechanism, a casing having a port, a teat cup, a conductor connecting the teat cup and port, a pulsator mounted for oscillation in said casing and provided with a spiral groove, amotor, and a pin carried'by the motor and the port in the casing.

4. In a milking machine, the combination with suction mechanism, or a casing having a lateral fluid intake port and provided with a lateral air intake ort and dlschargmg fluid at one end, a pn sator mounted for osoperated within the spiral i groove, thereby to alternately open and close 'cillation within the casing and having a portion extending in the direction of the l axis of oscillationand adapted to alternately open and close the fluid intake port, said pulsator being provided with a port adapted to register with the air intake, and also prosaid port to permit the passageof air from the said port to the fluid port, and a motor for oscillating the pulsator.

5. In a milking machine, a support adapted to rest on a milk receiving vessel, mechanism for producing suction within the milk-receptacle, a casing carried by the support and having a fluid intake port and provided with an air port, a valve mounted for oscillation within the casing and adapted to alternately open and close the air and fluid ports, respectively, said valve'being held. in l place by the reduction of air pressure in the l l vided with a pocket forming an extension of l milk receiving vessel, and a motor mounted on the support and operatively connected with the pulsator foractuating the latter.-

6. In a milking machine, the combination with suction mechanism, a casing having a fluid intake port and provided with a longir tudinal slot, :1 teat cup, a conductor connecting the intake port and teat cup, aipulsator mounted for oscillation within the casing and adapted to. alternately open and close the intake port, said pulsator having a spiral groove formed therein, a motor including a piston, and a pin extending laterally from the piston and projecting through the slot in the casing for engagement with the spiral groove, thereby to actuate the pulsator.

7. In a milking machine, the combination with suction mechanism, ot a casing provided with fluid and air inlet ports and having a vertical slot formed in one wall thereof a teat cup, a conductor connecting the fluid port and teat cup, a pulsator mounted for oscillation in said casing and having its upper endprovided with an enlarged head adapted to bear against the adjacent end of the casing, said valve being provided with a. spiral groove and having its lower end out away to produce a longitudinal extension adapted to alternately open and close the fluid intake port, there being an air port formed in the pulsator above the extension and adapted to register with the air inlet of the casing to permit the passage of air from said-port to'the fluid port at predetermined intervals, a motor, and a pin carried by the motor and operating within the groove of the pulsator for actuating the latter.

In testimony that I claim the foregoing as my own, I have hereto attired my signature 1 in the presence of two witnesses.

DAVID BROVN.

\Vitncsscs:

.Jon'n 1*}; Bram,

JAMES Tin'ilon BnncnAM. 

